1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd978b38a524a330839e14b27f903a7fa1ca7d631af506c631842b515fe1e264d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ad7f0f4-d188-4ff5-8743-0d9c90670f36.json and https://artists.proofprofile.net/proofs/artist/0ad7f0f4-d188-4ff5-8743-0d9c90670f36.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1607cc18725e194b27660602959a3d66a01c3402c3a358944686bdad5b872b. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:58:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF109900906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70c8804282e7b508e5e22dbd48031ac8c58e589ee428365336e864536e73940. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF109900901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3736a5a91a8a0bb56e8c9fe959a57fea2c2daa1a2d6135ff65d5bef2131b9ab0. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF100900753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8eb03cae741622dd95facf810a97fe6e0aea4a7fbcc1a8ced1bf8d8a619d460. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF109903300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb9f2ce45d82215ecf8bb42664dac277b57ffde6d3d5c960a7290338bc97794. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF109800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1641f43557deeea1996e76c28ba793b2e2caa2b9ec2b933015661db820b53303. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF049700665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398c6f78046479c73fbf74e55cfdf8bfbc25694feaf259a491c87fa24eb5cc45. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF109900904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245ddf67a5961a69b56d01d7dff4cda506760f92071eb470aa3d681f06f8feb4. Chain 2 (Bitcoin): anchored in block 957622 (2026-07-11T22:55:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARA590700097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf3e1c54b6949c7b9eccb7492bc3464631e0ec980697ece70cab84f972cf7ea. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:01:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARA590700098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b7ccf1ce14fcdc40b4b0028cbbd6eb10331b05756cbf56782183ef7789220d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARA590700102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ce2e2c919f1fa3e2d4a040722c3bb9abf361d769dd4e1a96bc8e32a8274dbb. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARA590700106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf600aaeb686a5120b2d9fcf49ab95b97f8095b2b660d1dd2b174a2ca43228370. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARA590700109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043e72339161c725036420f53bd50884c12cb491b3b0a5b2a503ed0f65fd0a2a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARA590700490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a9db7f4eff78d135d4c00323831641de05dc140fafb54604bdd7318e2af71f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARA590700492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927159b035c8d481fc12c8076267c0f8340b35adf11c193eff35857c1f0c3305. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARA590700505.
Folclore - La Colección - Los Hermanos Barrios
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa726b62b903b78e6f2b0a74ccec439faa1c0f3d0aaed3e036392d02e84ced702. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF100900797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf600aaeb686a5120b2d9fcf49ab95b97f8095b2b660d1dd2b174a2ca43228370. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:02:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARA590700109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f51874a51c5c2038827eb02ce995130f0f119005df487fac80a798035b46d1. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:32:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA011914561.